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7-T clinical MRI of the shoulder in patients with suspected lesions of the rotator cuff.
European Radiology Experimental ( IF 3.7 ) Pub Date : 2020-02-07 , DOI: 10.1186/s41747-019-0142-1 Andrea Lazik-Palm 1, 2 , Oliver Kraff 1 , Stefan H G Rietsch 1, 3 , Mark E Ladd 1, 4, 5 , Michael Kamminga 6 , Sascha Beck 7, 8 , Harald H Quick 1, 3 , Jens M Theysohn 2
中文翻译:
怀疑肩袖病变的患者的肩部7-T临床MRI。
更新日期:2020-02-07
European Radiology Experimental ( IF 3.7 ) Pub Date : 2020-02-07 , DOI: 10.1186/s41747-019-0142-1 Andrea Lazik-Palm 1, 2 , Oliver Kraff 1 , Stefan H G Rietsch 1, 3 , Mark E Ladd 1, 4, 5 , Michael Kamminga 6 , Sascha Beck 7, 8 , Harald H Quick 1, 3 , Jens M Theysohn 2
Affiliation
Background
To evaluate feasibility and diagnostic performance of clinical 7-T magnetic resonance imaging (MRI) of the shoulder.Methods
Eight patients with suspected lesions of the rotator cuff underwent 7-T MRI before arthroscopy. Image quality was scored for artifacts, B1+ inhomogeneities, and assessability of anatomical structures. A structured radiological report was compared to arthroscopy. In four patients, a visual comparison with pre-existing 1.5-T examinations was performed.Results
Regarding image quality, the majority of the sequences reached values above the middle of each scoring scale. Fat-saturated proton density sequences showed least artifacts and best structure assessability. The most homogenous B1+ field was reached with gradient-echo sequences. Arthroscopy did not confirm tendinopathy/partial tear of supraspinatus in 5/8 patients, of subscapularis in 5/6, and of infraspinatus in one patient; only a partial lesion of the subscapularis tendon was missed. Pathologic findings of long bicipital tendon, acromioclavicular joint, glenohumeral cartilage, labrum, and subacromial subdeltoideal bursa were mainly confirmed; exceptions were one lesion of the long bicipital tendon, one subacromial bursitis, and one superior glenoid labrum anterior-to-posterior lesion, missed on 7-T MRI. Evaluating all structures together, sensitivity was 86%, and specificity 74%. A better contrast and higher image resolution was noted in comparison to previous 1.5-T examinations.Conclusions
7-T MRI of the shoulder with diagnostic image quality is feasible. Overrating of tendon signal alterations was the main limitation. Although the diagnostic performance did not reach the current results of 3-T MRI, our study marks the way to implement clinical 7-T MRI of the shoulder.中文翻译:
怀疑肩袖病变的患者的肩部7-T临床MRI。